Wellons was convicted and sentenced to death in 1993 for the 1989
murder of his 15-year-old neighbor, India Roberts, a high school
sophomore from the Atlanta suburbs, whom Wellons raped and
strangled.

Wellons was executed using a single drug, which was not
disclosed, AP reported. Last month the Georgia Supreme Court
upheld a state law giving authorities the right to keep execution
drugs secret.

Shortly afterward Wellons, Missouri inmate John Winfield was put
to death for shooting dead two St. Louis County women in 1996.
One more woman survived his attack but was left blinded.

Lawyers for the two death row inmates appealed to the US Supreme
Court but their appeals were rejected.
Another Death Row convict in Florida, John Ruthell Henry, was set
to be executed in a 24-hour period.

All three states refuse to declare the source of the drugs for
the lethal injections, or if they have been tested.

Just a week ago, the US Supreme Court denied an appeal from a
Texas death row inmate whose lawyers called for state officials
to reveal the source of drugs intended to execute him.

Nine executions across the nation were postponed since April when
Oklahoma’s botched execution of Clayton Lockett who died of a
heart attack some 40 minutes after the procedure begun –
something that triggered a nationwide scandal and White House
described as "inhumane."

"I think after Clayton Lockett's execution everyone is going
to be watching very closely. The scrutiny is going to be even
closer," Fordham University School of Law professor Deborah
Denno, a death penalty expert, told AP.

In May, Republican Senator Paul Ray from Utah described the use
of firing squads a form of execution in the US as “more
humane.”

A report in May titled “Irreversible Error”
stated that some chemicals used to execute death row inmates
trigger such acute pain that veterinarians in some parts of the
US are banned from using them to euthanize animals.